Daikin Industries, Ltd.

Daikin Kogyo Co., Ltd.

Shigehiro Uemura

Noboru Kobayashi

Masahiro Kobayashi

Kunikazu Torikoshi

Katsumi Sakitani

Ryuzaburo Yajima

In a thermal-environment sensor which detects thermal conditions in an indoor environment based on the surface temperature of a heating element supplied with a thermal quantity, the spectral emissivity of the outer surface of said heating element closely conforming to the spectral emissivity of the surface of the human skin or clothes thereon so as to bring the radiant heat transfer coefficient of the sensor remarkably near that of the human body.

Thermal environment sensor with means to simulate emissivity of human

Thermal-environment sensor with means to simulate emissivity of human

A cross-fin coil type heat exchanger wherein a multiplicity of raised fins of the louver type are formed on the major portion of the surface of a convoluted fin base plate and the area of the portion of the fin base plate reduced in heat transfer performance is minimized, to improve the heat transfer effects achieved by the fins. Means is provided to inhibit the growth of a boundary layer by the front edge effect of the raised fins and promote the conversion of a current of a heat exchange fluid. Ribs are formed in the fins remote from heat transfer tubes to further promote the conversion of the current of the heat exchange fluid into a turbulent flow and also to reinforce the fins. The raised fins of the louver type have a construction that tends itself to good draining, to avoid an increase in the resistance offered to the passage of the current of the heat exchange fluid in wet condition.

Cross-fin coil type heat exchanger

Growing community of inventors

Sakai, Japan

Shigehiro Uemura